Datasheet > MAX15021

MAX15021

更新时间： 2024-11-15 14:57:55

品牌	Logo	应用领域
亚德诺 - ADI		调节器
页数	文件大小	规格书
24页	348K
描述
双通道、4A/2A、4MHz、降压型DC-DC调节器，提供跟踪/排序功能

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中文翻译

获取价格

数据手册

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MAX15021 数据手册

Dual, 4A/2A, 4MHz, Step-Down

DC-DC Regulator withTracking/

Sequencing Capability

MAX15021

General Description

Benefits and Features

The MAX15021 is a dual-output, pulse-width-modulated

(PWM), step-down DC-DC regulator with tracking (coin-

cident and ratiometric) and sequencing options. The

device operates from 2.5V to 5.5V and each output can

• Integration Reduces Power-Supply Footprint for Space-

Constrained Designs

• Dual-Output Synchronous Buck Regulators

• Integrated Switches for 4A and 2A Output Currents

• Programmable Switching Frequency from 500kHz

to 4MHz

• 28-Pin TQFN Package (5mm x 5mm)

• 180° Out-Of-Phase Operation Reduces Input

Ripple Current and Thus the Size of the Input

Bypass Capacitors

be adjusted from 0.6V to the input supply (V

). The

AVIN

MAX15021 delivers up to 4A (regulator 1) and 2A (reg-

ulator 2) of output current. This device offers the ability

to adjust the switching frequency from 500kHz to 4MHz

and provides the capability of optimizing the design in

terms of size and performance.

The MAX15021 utilizes a voltage-mode control scheme

with external compensation to provide good noise

immunity and maximum flexibility in selecting inductor

values and capacitor types. The dual switching regula-

tors operate 180° out-of-phase, thereby reducing the

RMS input ripple current and thus the size of the input

bypass capacitor significantly.

• Sophisticated Tracking/Sequencing Functions

Facilitate Reliable Processor Operation

• Digital Soft-Start and Soft-Stop for Tracking

Applications

• Digital Soft-Start into a Prebiased Load for

Sequencing Applications

• Sequencing or Coincident/Ratiometric Tracking

The MAX15021 offers the ability to track (coincident or

ratiometric) or sequence during power-up and power-

down operation. When sequencing, it powers up glitch-

free into a prebiased output.

• Flexible Enough for Use in a Range of Designs

• 2.5V to 5.5V Input Voltage Range

• Output-Voltage Adjustable from 0.6V to V

AVIN

• External Compensation for Maximum Flexibility

• 100% Maximum Duty Cycle

Additional features include an internal undervoltage

lockout with hysteresis and a digital soft-start/soft-stop

for glitch-free power-up and power-down. Protection

features include lossless cycle-by-cycle current limit,

hiccup-mode output short-circuit protection, and ther-

mal shutdown.

• Integrated Protection Features Save Space and

Increase Reliability

• Lossless, Cycle-by-Cycle Current Sensing

• Thermal Shutdown and Hiccup-Mode Short-Circuit

Protection

The MAX15021 is available in a space-saving, 5mm x

5mm, 28-pin TQFN-EP package and is specified for

operation from -40°C to +125°C temperature range.

• 20µA Shutdown Current Extends Battery Life in

Portable Applications

Applications

Pin Configuration

RFID Reader Cards

TOP VIEW

Power-over-Ethernet (PoE) IP Phones

Automotive Multimedia

Multivoltage Supplies

21 20 19 18 17 16 15

N.C. 22

N.C.

COMP2 23

Networking/Telecom

12 COMP1

FB2

EN2

MAX15021

FB1

Ordering Information

SGND

AVIN

EN1

DVDD1

PGND1

PART

TEMP RANGE

PIN-PACKAGE

*EP

MAX15021ATI/V+

-40°C to +125°C

28 TQFN-EP*

/V denotes an automotive qualified part.

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

*EP = EXPOSED PAD.

19-4106; Rev 2; 4/15

12 3 4 5 6 7...24

中文翻译

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与MAX15021相关器件

型号	品牌	获取价格	描述	数据表
MAX15021ATI	MAXIM	获取价格	Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator
MAX15021ATI/V	MAXIM	获取价格	Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator
MAX15021ATI+T	MAXIM	获取价格	Switching Regulator/Controller, Voltage-mode, 4A, 4000kHz Switching Freq-Max, BICMOS, PQCC
MAX15022	MAXIM	获取价格	Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Dual LDO Controllers
MAX15022	ADI	获取价格	双路、4A/2A、4MHz、降压型DC-DC调节器，提供双LDO控制器
MAX15022_11	MAXIM	获取价格	Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Dual LDO Controllers
MAX15022ATI	MAXIM	获取价格	Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Dual LDO Controllers
MAX15022ATI/V+	MAXIM	获取价格	Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Dual LDO Controllers
MAX15022ATI+	MAXIM	获取价格	Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Dual LDO Controllers
MAX15022ATI+T	MAXIM	获取价格	Dual Switching Controller, Voltage-mode, 6A, 4000kHz Switching Freq-Max, BICMOS, TQFN-28

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